Free.  The Lindheimer Chapter of the Native Plant Society of Texas (Comal County) meets on the 3rd Tuesday of the month at 6:30 P.M.  Meetings are open to the public and new members are welcome.  For more information, visit http://npsot.org/wp/lindheimer/ Pollen Trackers is a new citizen science project -- an effort to collect data on when mountain cedar trees (otherwise ...